package com.atguigu.bio;

import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class BIOServer {
    public static void main(String[] args) throws Exception {
        //线程池机制
        //思路
        //1. 创建一个线程池
        //2. 如果有客户端连接，就创建一个线程，与之通讯(单独写一个方法)
        ExecutorService newCachedThreadPool = Executors.newCachedThreadPool();

        //创建ServerSocket
        try (ServerSocket serverSocket = new ServerSocket(6666)) {
            System.out.println("服务器启动了");

            while (true) {
                System.out.println("线程信息 id =" + Thread.currentThread().getId() + " 名字=" + Thread.currentThread().getName());
                //监听，等待客户端连接
                System.out.println("等待连接....");
                final Socket socket = serverSocket.accept();
                System.out.println("连接到一个客户端");

                //就创建一个线程，与客户端通讯(单独写一个方法)
                newCachedThreadPool.execute(() -> handler(socket));
            }
        }
    }

    //编写一个handler方法，和客户端通讯
    public static void handler(Socket socket) {
        System.out.println("线程信息 id =" + Thread.currentThread().getId() + " 名字=" + Thread.currentThread().getName());
        byte[] bytes = new byte[1024];
        //通过socket 获取输入流
        try (InputStream inputStream = socket.getInputStream()) {
            //循环的读取客户端发送的数据
            while (true) {
                System.out.println("线程信息 id =" + Thread.currentThread().getId() + " 名字=" + Thread.currentThread().getName());
                System.out.println("read....");
                int read = inputStream.read(bytes);
                if (read == -1) {
                    break;
                }
                System.out.println(new String(bytes, 0, read)); //输出客户端发送的数据
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        } finally {
            System.out.println("关闭和client的连接");
        }
    }
}
